The situation in the economic market is difficult to characterize like the stable. In general, the majority of states are searching now for a way to keep the purchasing power of the money, to settle the different areas of economic development. The largest enterprises capture the monopoly in a particular field by dictating the defined level of price and their "rules" of the game. To the person who wants to keep and increase their own funds sometimes it is extremely difficult to determine the source of the stable income.